Many people have been interested in the effects of pet ownership on overall health.Surprisingly enough, the results have been somewhat inconclusive to date.A major investigation of the issue might compare pet owners to people without pets over a 5- to 10-year period.Which group is the experimental group?
A) pet owners
B) people without pets
C) the pets themselves
D) pet owners with poor health

Question

Quizplus · Accepted Answer

The experimental group is the group being tested to see if there is a difference in outcome compared to the control group, which in this case is people without pets. Therefore, pet owners are the experimental group in this investigation. The pets themselves and pet owners with poor health are not relevant to the comparison being made.

Many People Have Been Interested in the Effects of Pet